exclave

In political geography, an exclave is a territory that is separated from the main part of the country to which it belongs. This separated portion is surrounded by the territory of one or more foreign countries. From the perspective of the country that governs it, it's an exclave, but from the perspective of the surrounding territory, it's an enclave.12

For example, the Russian region of Kaliningrad is an exclave because it is separated from the rest of Russia and lies between Lithuania and Poland. Point Roberts, Washington, in the United States, is also an exclave, separated from the rest of the U.S. by Canada. A territory that borders foreign land but also a body of water that allows access to its main territory is called a semi-exclave or semi-enclave.13